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Table 1 Duke prognostic exercise treadmill score and annual cardiac mortalitya [8, 9]

From: Risk stratification of patients in an emergency department chest pain unit: prognostic value of exercise treadmill testing using the Duke score

Risk group Treadmill score Average annual cardiac mortality, %
Low ≥ 5 0.25-0.50
Moderate −10 to < 5 1.25-2.0
High ≤ −11 5.0-7.0
  1. aDuke formula: treadmill score = (exercise duration in minutes) – (5 × ST-segment deviation in millimeters) – (4 × treadmill angina index), where the treadmill angina index = 0 for no exercise angina, 1 for exercise angina and 2 for exercise-limiting angina